The Harmonic Suppression Strategies and Efficiency Analysis of Electric Vehicle Induction Motor Drive System

Abstract:

The dead zone and voltage drop of inverter power switches make the currents in asynchronous motor drive system contain a large amount of harmonic. This aberration of currents waveform influences the efficiency of motor drive system. Aim at this problem, this paper proposes a harmonic injection method to eliminate the currents harmonic component when the motor is running, which improves currents waveform of motor and boosts efficiency of motor drive system. The effectiveness and real-time performance of this algorithm is verified via the simulation and the contrast experiment. Through the result of simulation, five times harmonic content decreased from 9% to 2%, the total harmonic distortion of voltage (THD) decreased from 6% to 2%, and efficiencyis increased from 98.99% to 99.95%.

• Periodical: Applied Mechanics and Materials (Volume 734)
• Pages: 336-339
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.734.336
• Online since: February 2015
• Authors: Gang Qin*, Jian Xiao Zou, Xiao Shuai Xin, Hong Bing Xu
• Keywords: Efficiency Analysis, Electric Vehicle (EV), Harmonic Suppression Strategy, Low Pass Filter

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